Table 2 Univariate and multivariate Cox proportional hazard models to predict OS in DTC patients

Age (years)

 ≤ 55

reference

 > 55

-

0.99

Sex

 Male

reference

 Female

0.96 (0.20 to 4.64)

0.96

Race

 White

reference

 Other

1.00 (0.21 to 4.82)

0.99

T stage

 T1/T2

reference

reference

 T3/T4

4.78 (0.98 to 23.17)

0.05

14.28 (1.59 to 94.65)

0.01

N stage

 N0

reference

 N1

1.87 (0.47 to 7.47)

0.37

M stage

 M0

reference

 M1

4.09 (0.50 to 33.5)

0.19

RiskScore

3.04 (1.90 to 4.85)

< 0.001

4.42 (2.31 to 8.45)

< 0.001